The MAX823TEUK is a compact, highly-reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with 5V power supplies.

This supervisory circuit is engineered to maintain system integrity by monitoring the power supply voltage. It asserts a reset signal to the connected microprocessor when it detects that the supply voltage has dropped below a preset threshold, ensuring that the µP restarts in a known state after a power failure. The reset signal remains asserted for a minimum timeout period after the supply voltage exceeds the reset threshold, allowing the power supply and processor to stabilize before resuming operation.

Key Features:

• Precision Monitoring: The MAX823TEUK features a precision voltage monitor with a factory-set reset threshold voltage, providing accurate monitoring suitable for 5V-powered systems.
• Manual Reset Input: A manual reset input is available, allowing for a system reset to be triggered with an external switch or logic signal.
• Low Supply Current: Designed for energy-efficient applications, the device consumes a low supply current, making it ideal for portable and battery-operated systems.
• Reset Timeout: The reset signal timeout period is guaranteed to be a minimum of 140ms, providing ample time for the system to recover after a power-down event.
• Compact Package: The MAX823TEUK is available in a space-saving SOT-23 package, which is suitable for high-density PCB layouts.

Applications:

The supervisory circuit is versatile and can be implemented in a variety of applications, including:

• Computers and controllers
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Embedded Systems
• Critical µP and µC Power Monitoring

Maxim Integrated's MAX823TEUK is a testament to their commitment to providing innovative, high-quality integrated circuits that enhance the performance and dependability of electronic systems.